查询词典 ct.

For instance, in the direct 3-D CT image reconstruction, the calculating scale, the calculating complexity and freedom of parameters go far beyond the processing capability of array processor used in 2-D medical CT.

七十年代以来，CT技术已经有了长足的发展，医用CT的成功和普及以及工业CT技术的进展使无损检测手段发生了划时代的变化，开创了现代辐射成象技术的新阶段。

Siemens Biograph PET/CT is a combined positron emission tomography and computed tomography system,and combined PET/CT systems are taking place of single PET to be the main choice of clinical application.

Biograph 系列扫描仪是西门子公司研制的高性能 PET 和螺旋 CT 一体化的混合 PET/CT 扫描系统，PET/CT 混合成像系统正在取代单独 PET 系统成为临床应用的主要选择。

Objective:To evaluate the spiral CT cholecystography with three-dimentional reconstruction for diagnosis of gallbladder lesions.Methods:Combining oral and intravenous cholecystgraphic CT,43 patients underwent single breath-hold upper abdominal spiral CT volume scanning.

43例胆囊疾病者中胆囊结石27例，胆囊癌9例，胆囊息肉7例；利用口服胆囊造影CT和静脉输入胆道对比剂Biliscopin相结合，行上腹部螺旋CT容积扫描，在工作站利用软件将图像处理后得到胆囊及胆管系统立体图像。

The injective rings play an important role in the study of rings and categories of modules . First , we introduce the notion of ann-injective rings and CT-injective modules .Second,we make an inquiry into a series of their properties.Third,we give the definition of homological dimension of CT-injective modules.At last,we give the definition of FGT rings which is the extension of cogenerator rings.

本文对环与模范畴中一重要的模类—内射模进行了延拓，引入了ann -自内射环以及CT -内射模的概念，探讨了它们一系列的性质，并定义了CT -内射模的同调维数，最后对余生成子环进行推广得到了FGT -环，讨论了它与CT -内射环的关系以及它的一些性质。

objective to evaluate the main points and complications of ct-guided percutaneous pneumocentesis in patients with lung lesions.methods cook 18～21g puncture needle was used to inserting aspiration in the optimal level,situs,angle and depth.and had made of multidrop.fifty-nine patients with lung lesions underwent ct-guided percutaneous pneumocentesis and follow-up.results the successful puncture rate was 100%,accurate diagnose rate was 92%(54/59).conclusion ct-guided pneumocentesis for chest lesion is a efficient and safe diagnostic method.but it is important to improve the doctor′s operating skill to lessen vascular complication.

目的 探讨ct引导下经皮肺穿刺活检的技术要点及并发症。方法采用cook公司18～21g自动弹射活检枪，选择最佳层面、进针点、进针角度和深度，行多点取材。回顾性分析59例肺内病变ct引导下经皮肺穿刺活检术。结果穿刺成功率100%，活检诊断准确率为92%（54/59）。3例发生轻度气胸，2例穿刺后咯血痰。结论 ct引导下经皮肺穿刺活检术成功率高，是安全的，但操作医生熟练的技术方法非常重要，并可以减少并发症的发生。

objective to explore some ct characteristics and risk factors for traumatic chronic bilateral subdural hematoma.methods a total of 52 patients with chronic subdural hematoma were reviewed.some ct characteristics of bcsdh were studied first.then,the risk factors for bcsdh were determined by logistic regression model from the following variates: age,gender,prediagnostic duration,site for injury force,coma experience and ct showing after injury.results bcsdh was observed in 44.2% of 52 patients with csdh.

作者单位：第三军医大学大坪医院野战外科研究所神经外科，重庆 400042 目的探讨创伤性双侧慢性硬膜下血肿的ct特征及危险因素。方法回顾有随访资料的创伤性慢性硬膜下血肿52例。先研究其ct表现，然后采用多因素logistic回归分析从以下变量中，如年龄、性别、伤后&潜伏&时间、受伤着力部位、受伤时有无昏迷经过、伤时ct表现等确定bcsdh发生的影响因素。

2The difference of conventional X-ray and CT:results showed that CT was better than X-ray in depicting the signs such as density,lobulation,spiculate protuberance,mediastinum lymphaden,X-ray was better than CT in contour and edge of solitary globular lesion of the lung.

X线、CT表现差异：肿块密度、分叶、棘状突起、纵隔淋巴结肿大的观察CT优于胸片，病灶形态、边缘的显示胸片较CT优越。

Methods One hundred patients (80 males and 20 females, aged from 11 to 75 years) who suffered from cerebrovascular disease received routine cerebral CT examination in resting state firstly. After breathing in the xenon-oxygen mixed gase in proportion, they once more received the cerebral CT examination. Nine of them were injected vasodilating agent, then received the enhanced CT examination again. Finally, these results were transferred to the Xe-CT CBF analysis system to analyze the CBF quantitatively.

选择100例脑血管病患者（男80例，女20例，年龄11～75岁）在安静状态下进行CT头颅常规扫描然后吸入氙气与氧气按一定的比例形成的混合气体后再次进行扫描，其中9例注入血管扩张药后进而行增强扫描，最后将扫描结果上传Xe-CT CBF分析系统，进行CBF的定量分析。

Abstract��� Objective To observe the therapeutic value of ansepidermal dissolution of the nucleus pulposus by O3 under the spiral CT.Methods One hundred and sixteen patients approved to be protrusion of lumbar intervertable by CT or MR,and comporting ache of the small of the back and lower limbs,were treated by dissolution of the nucleas pulposas under the spiral CT.

目的 探讨螺旋CT引导下经皮穿刺臭氧髓核溶解术治疗腰椎间盘突出症的价值方法 116例患者经CT或MRI检查证实腰椎间盘突出症，均表现为腰背部疼痛及下肢麻痛，在CT的引导下行臭氧髓核溶解术治疗。

The clinical therapeutic strategies were changed in 22 cases due to the results of PET/CT,and the influence rate of PET/ CT was 28.6 %(22/77).Conclusion PET/CT can detect the primary lesions, recurrence and metastasis of gastrointestinal tumor with high sensitivity and accuracy. 18F-FDG PET/CT imaging has increased accuracy of the diagnosis, staging, restaging for gastrointestinal tumor.

PET/CT能准确、灵敏地检测胃肠道肿瘤原发病灶、转移以及复发病灶，对临床治疗决策有重要影响。18F-FDG PET/CT显像对胃肠道恶性肿瘤的分期、术后再分期诊断有较高的临床价值。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。